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RE: Could XQuery replace the W3C DOM?

From: <noah_mendelsohn@us.ibm.com>
Date: Tue, 3 Sep 2002 18:48:14 -0400
To: Adam Bosworth <adam.bosworth@bea.com>
Cc: eamon.otuathail@clipcode.com, "Kay, Michael" <Michael.Kay@softwareag.com>, www-ql@w3.org
Message-ID: <OF89421E71.0170E2FB-ON85256C29.007C7484@lotus.com>

Yes, agreed.  Particularly in situations where query (as opposed to 
application driven navigation or streaming) is the natural model, then 
it's reasonable to speculate that query-based implementation might provide 
better performance than alternatives.  Thanks.

------------------------------------------------------------------
Noah Mendelsohn                              Voice: 1-617-693-4036
IBM Corporation                                Fax: 1-617-693-8676
One Rogers Street
Cambridge, MA 02142
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Adam Bosworth <adam.bosworth@bea.com>
08/29/2002 01:04 PM

 
        To:     "'noah_mendelsohn@us.ibm.com'" <noah_mendelsohn@us.ibm.com>, "Kay, 
Michael" <Michael.Kay@softwareag.com>
        cc:     eamon.otuathail@clipcode.com, www-ql@w3.org
        Subject:        RE: Could XQuery replace the W3C DOM?


From a performance point of view, one can imagine a factory object that
given xml queries, generates optimal code for executing them. That clearly
could be a lot more efficient than DOM in many many cases. 

-----Original Message-----
From: noah_mendelsohn@us.ibm.com [mailto:noah_mendelsohn@us.ibm.com]
Sent: Wednesday, August 28, 2002 7:52 AM
To: Kay, Michael
Cc: eamon.otuathail@clipcode.com; www-ql@w3.org
Subject: RE: Could XQuery replace the W3C DOM?



DOM is already somewhat slow/heavyweight for certain purposes.   While I'm 

sure a lot of good work will be done on query implementation and 
optimization, it's not immediately clear that a query-based implementation 

would in practice be more rather than less efficient compared to DOM.  Not 

that it's a bad idea in principle, but performance is a significant 
barrier to adoption of XML for purposes such as SOAP, and we do need to 
pay more attention to performance as APIs evolve, IMO.  Thanks

------------------------------------------------------------------
Noah Mendelsohn                              Voice: 1-617-693-4036
IBM Corporation                                Fax: 1-617-693-8676
One Rogers Street
Cambridge, MA 02142
------------------------------------------------------------------
Received on Tuesday, 3 September 2002 18:49:35 UTC

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